JP2021099930A - Manufacturing method of junction separator for fuel cell - Google Patents

Manufacturing method of junction separator for fuel cell Download PDF

Info

Publication number
JP2021099930A
JP2021099930A JP2019231126A JP2019231126A JP2021099930A JP 2021099930 A JP2021099930 A JP 2021099930A JP 2019231126 A JP2019231126 A JP 2019231126A JP 2019231126 A JP2019231126 A JP 2019231126A JP 2021099930 A JP2021099930 A JP 2021099930A
Authority
JP
Japan
Prior art keywords
separator
bead
bead seal
seal portion
fuel cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2019231126A
Other languages
Japanese (ja)
Other versions
JP7428514B2 (en
Inventor
純一 島田
Junichi Shimada
純一 島田
元 由井
Hajime Yui
元 由井
茂 渡部
Shigeru Watabe
茂 渡部
稔大 島添
Toshihiro Shimazoe
稔大 島添
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nok Corp filed Critical Nok Corp
Priority to JP2019231126A priority Critical patent/JP7428514B2/en
Priority to CN202011485344.8A priority patent/CN113097527B/en
Priority to US17/128,713 priority patent/US11302931B2/en
Publication of JP2021099930A publication Critical patent/JP2021099930A/en
Application granted granted Critical
Publication of JP7428514B2 publication Critical patent/JP7428514B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0206—Metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0226—Composites in the form of mixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0286—Processes for forming seals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Fuel Cell (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

To provide a manufacturing method of a junction separator for a fuel cell, allowing for reduction of the variation of surface pressure of a bead seal portion of the junction separator.SOLUTION: The manufacturing method of a junction separator includes: a junction separator forming step of forming a junction separator 1 by joining a first metal separator 21 and a second metal separator 22 together each having a convex bead portion 31, at surfaces on the opposite sides of surfaces where the bead portions 31 of the first metal separator 21 and the second metal separator 22 protrude; and a preliminary load imparting step of imparting preliminary load to a bead seal portion 10 in a thickness direction of the junction separator using a pair of pressure plates 61, the bead seal portion 10 being formed by the pair of bead portions 31, thereby plastically deforming the bead seal portion 10. In the preliminary load imparting step, the preliminary load imparted to a straight line portion of the bead seal portion 10 is set to be smaller than the preliminary load imparted to a curved portion of the bead seal portion 10.SELECTED DRAWING: Figure 3

Description

本発明は、燃料電池用接合セパレータの製造方法に関する。 The present invention relates to a method for manufacturing a bonding separator for a fuel cell.

接合セパレータを備えた燃料電池セルが知られている。当該接合セパレータは、凸状を呈するビードシール部を備えている。一対のビードシール部で電解質膜・電極構造体（ＭＥＡ：Membrane Electrode Assembly）の電解質膜を両側から挟むことにより、反応ガスの漏洩を防ぐシール領域を形成している。 Fuel cell cells with a junction separator are known. The bonding separator is provided with a bead seal portion having a convex shape. By sandwiching the electrolyte membrane of the electrolyte membrane / electrode structure (MEA: Membrane Electrode Assembly) from both sides between the pair of bead seal portions, a seal region for preventing leakage of the reaction gas is formed.

ここで、図９は、ビードシール部の一例を示す模式平面図である。図１０は、図９のＸ−Ｘ断面図である。図９に示すように、ビードシール部１００は、平面視矩形状を呈し、その周方向に亘ってシール領域を形成している。ビードシール部１００は、４つの直線部１３１と、角部に形成された４つの曲線部１３２とを有する。図１０に示すように、ビードシール部１００は、反対方向に突出するビード部１０１，１０１とで構成されている。ビードシール部１００の先端には、延長方向に亘ってシール部材１２０，１２０が設けられている。 Here, FIG. 9 is a schematic plan view showing an example of the bead seal portion. FIG. 10 is a cross-sectional view taken along the line XX of FIG. As shown in FIG. 9, the bead seal portion 100 has a rectangular shape in a plan view and forms a seal region along the circumferential direction thereof. The bead seal portion 100 has four straight portions 131 and four curved portions 132 formed at the corners. As shown in FIG. 10, the bead seal portion 100 is composed of bead portions 101 and 101 protruding in opposite directions. Seal members 120, 120 are provided at the tip of the bead seal portion 100 in the extension direction.

図１１は、燃料電池セルのセル厚みとシール圧力との関係を示すグラフである。例えば、特許文献１に係るビードシール部では、外部荷重に対する塑性変形の影響が大きいため、ビードシール部に予め予備荷重を付与する技術が開示されている。荷重特性線Ｌ４は、ビードシール部に予備荷重を付与した状態を示している。荷重特性線Ｌ４のように、予備荷重を付与することにより、燃料電池スタックの運転時の外乱（温度変化や衝突等）によって荷重変動が発生しても塑性変形することがなく、荷重を加えた場合と荷重を抜いた場合とで同一の荷重特性線Ｌ４上を移動することができる。つまり、予備荷重を付与することにより、運転範囲が拡大し、外乱に耐え得る広い荷重特性が得られ、所望のシール面圧を得ることができる。なお、図１１の荷重特性線Ｌａ，Ｌｂ，Ｌｃでは、予備荷重が付与されていないため、所望のシール面圧を維持するための運転範囲が狭小になっている。 FIG. 11 is a graph showing the relationship between the cell thickness of the fuel cell and the sealing pressure. For example, in the bead seal portion according to Patent Document 1, since the influence of plastic deformation on the external load is large, a technique for applying a preliminary load to the bead seal portion in advance is disclosed. The load characteristic line L4 shows a state in which a preliminary load is applied to the bead seal portion. By applying a preliminary load as in the load characteristic line L4, the load is applied without plastic deformation even if the load fluctuates due to disturbances (temperature change, collision, etc.) during operation of the fuel cell stack. It is possible to move on the same load characteristic line L4 in the case and when the load is removed. That is, by applying a preliminary load, the operating range is expanded, a wide load characteristic capable of withstanding disturbance can be obtained, and a desired sealing surface pressure can be obtained. In the load characteristic lines La, Lb, and Lc of FIG. 11, since no preliminary load is applied, the operating range for maintaining the desired sealing surface pressure is narrowed.

特開２０１７−１３９２１８号公報Japanese Unexamined Patent Publication No. 2017-139218

図９及び図１０に示すビードシール部１００の反力は、主に断面形状によって決まるが、その平面形状（面外方向から見た形状）の影響もある。ビードシール部１００が同一断面であっても、直線部１３１と曲線部１３２とでは予備荷重付与後のスプリングバック量が異なるため、直線部１３１と曲線部１３２とでビードの高さが異なる場合がある。図１２は、ビードシール部の一例に係るビードシール部の圧縮量と面圧との関係を示すグラフである。図１２に示すように、同じ圧縮量であっても、曲線部１３２に比べて直線部１３１の面圧が低下するため、ビード反力がばらつくおそれがある。 The reaction force of the bead seal portion 100 shown in FIGS. 9 and 10 is mainly determined by the cross-sectional shape, but is also affected by the planar shape (shape seen from the out-of-plane direction). Even if the bead seal portion 100 has the same cross section, the bead height may differ between the straight portion 131 and the curved portion 132 because the amount of springback after the preload is applied differs between the straight portion 131 and the curved portion 132. is there. FIG. 12 is a graph showing the relationship between the amount of compression of the bead seal portion and the surface pressure according to an example of the bead seal portion. As shown in FIG. 12, even if the amount of compression is the same, the surface pressure of the straight portion 131 is lower than that of the curved portion 132, so that the bead reaction force may vary.

本発明はかかる課題を解決するために発明されたものであり、接合セパレータのビードシール部の面圧のばらつきを低減することができる燃料電池用接合セパレータの製造方法を提供することを課題とする。 The present invention has been invented in order to solve such a problem, and an object of the present invention is to provide a method for manufacturing a fuel cell bonding separator capable of reducing variations in surface pressure of a bead seal portion of the bonding separator. ..

前記課題を解決するための本発明は、凸状を呈するビード部を有する第１金属セパレータ及び第２金属セパレータを、前記ビード部が突出する側の面とは反対側の面同士を接合して接合セパレータを形成する接合セパレータ形成工程と、一対の前記ビード部で形成されたビードシール部に、一対の圧盤で前記接合セパレータの厚さ方向に予備荷重を付与して、前記ビードシール部を塑性変形させる予備荷重付与工程と、を含み、前記予備荷重付与工程では、前記ビードシール部の直線部に付与する予備荷重を、曲線部に付与する予備荷重よりも小さく設定することを特徴とする。 In the present invention for solving the above-mentioned problems, a first metal separator and a second metal separator having a bead portion exhibiting a convex shape are joined to each other on a surface opposite to the surface on the side on which the bead portion protrudes. A preload is applied to the bead seal portion formed by the pair of bead portions in the bonding separator forming step of forming the bonding separator by a pair of pressure plates in the thickness direction of the bonding separator, and the bead seal portion is plasticized. The preload applying step including the step of applying the preload to be deformed is characterized in that the preload applied to the straight portion of the bead seal portion is set to be smaller than the preload applied to the curved portion.

かかる製造方法によれば、ビードシール部の直線部と曲線部の高さ寸法のばらつきを低減することができる。これにより、ビードシール部の面圧のばらつきを低減することができる。 According to such a manufacturing method, it is possible to reduce the variation in height dimension between the straight portion and the curved portion of the bead seal portion. Thereby, the variation in the surface pressure of the bead seal portion can be reduced.

本発明の燃料電池用接合セパレータの製造方法によれば、接合セパレータのビードシール部の面圧のばらつきを低減することができる。 According to the method for manufacturing a fuel cell bonding separator of the present invention, it is possible to reduce variations in the surface pressure of the bead seal portion of the bonding separator.

実施例に係る燃料電池用接合セパレータの平面図である。It is a top view of the junction separator for a fuel cell which concerns on Example. 図１のＡ−Ａ断面図である。FIG. 1 is a cross-sectional view taken along the line AA of FIG. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の直前の状態を示すシールラインに沿う断面図である。It is sectional drawing along the seal line which shows the state immediately before the preload application process of the manufacturing method of the junction separator for a fuel cell which concerns on Example. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の直前の状態を示す図３のＡ−Ａ断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3 showing a state immediately before the preload application step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の直前の状態を示す図３のＢ−Ｂ断面図である。FIG. 3 is a cross-sectional view taken along the line BB of FIG. 3 showing a state immediately before the preload application step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の直前の状態を示す図３のＣ−Ｃ断面図である。FIG. 3 is a cross-sectional view taken along the line CC of FIG. 3 showing a state immediately before the preload application step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の荷重を付与している状態を示す図３のＡ−Ａ断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3 showing a state in which a load is applied in the preliminary load applying step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の荷重を付与している状態を示す図３のＢ−Ｂ断面図である。FIG. 3 is a cross-sectional view taken along the line BB of FIG. 3 showing a state in which a load is applied in the preliminary load applying step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 実施例に係る燃料電池用接合セパレータの製造方法の予備荷重付与工程の荷重を付与している状態を示す図３のＣ−Ｃ断面図である。FIG. 3 is a cross-sectional view taken along the line CC of FIG. 3 showing a state in which a load is applied in the preliminary load applying step of the method for manufacturing a fuel cell bonding separator according to an embodiment. 比較例に係るビードシール部の高さと荷重との関係を示すグラフである。It is a graph which shows the relationship between the height of the bead seal portion and the load which concerns on a comparative example. 実施例に係るビードシール部の高さと荷重との関係を示すグラフである。It is a graph which shows the relationship between the height of the bead seal portion and the load which concerns on Example. 変形例に係る接合セパレータの平面図である。It is a top view of the bonding separator which concerns on a modification. ビードシール部の一例を示す模式平面図である。It is a schematic plan view which shows an example of the bead seal part. 図９のＸ−Ｘ断面図である。9 is a cross-sectional view taken along the line XX of FIG. 燃料電池セルのセル厚みとシール圧力との関係を示すグラフである。It is a graph which shows the relationship between the cell thickness of a fuel cell, and the seal pressure. ビードシール部の一例に係るビードシール部の圧縮量と面圧との関係を示すグラフである。It is a graph which shows the relationship between the compression amount and the surface pressure of the bead seal part which concerns on an example of a bead seal part.

実施形態に係る燃料電池用接合セパレータの製造方法及び燃料電池用接合セパレータについて、図面を参照して説明する。図１に示すように、本実施形態に係る燃料電池用接合セパレータ（以下、単に「接合セパレータ」とも言う）１は、ビードシール部１０と、シール部材１１とを有する。また、ビードシール部１０は、直線状を呈する直線部２と、曲線状を呈する曲線部３と、直線部２と曲線部３との間のつなぎ目部４とを有する。つなぎ目部４は、曲線部３に差し掛かる手前の部分であって、曲線部３よりも曲率が小さい部位を意味する。 The method for manufacturing the fuel cell bonding separator and the fuel cell bonding separator according to the embodiment will be described with reference to the drawings. As shown in FIG. 1, the fuel cell bonding separator (hereinafter, also simply referred to as “bonding separator”) 1 according to the present embodiment has a bead seal portion 10 and a sealing member 11. Further, the bead seal portion 10 has a straight portion 2 exhibiting a linear shape, a curved portion 3 exhibiting a curved shape, and a joint portion 4 between the straight portion 2 and the curved portion 3. The joint portion 4 is a portion in front of the curved portion 3 and means a portion having a smaller curvature than the curved portion 3.

図２に示すように、ビードシール部１０は、第１金属セパレータ２１と、第２金属セパレータ２２とを接合して形成されている。第１金属セパレータ２１と第２金属セパレータ２２とは同じ形状になっている。 As shown in FIG. 2, the bead seal portion 10 is formed by joining the first metal separator 21 and the second metal separator 22. The first metal separator 21 and the second metal separator 22 have the same shape.

第１金属セパレータ２１は、平坦な基部３０と、凸状を呈するビード部３１とを有する。ビードシール部１０は、反対方向に突出するビード部３１，３１で構成されており、断面６角形の中空部を有する。ビードシール部１０の先端部には、その延長方向に沿ってシール部材１１がそれぞれ設けられている。 The first metal separator 21 has a flat base portion 30 and a bead portion 31 having a convex shape. The bead seal portion 10 is composed of bead portions 31, 31 protruding in opposite directions, and has a hollow portion having a hexagonal cross section. A seal member 11 is provided at the tip of the bead seal portion 10 along the extension direction thereof.

燃料電池用接合セパレータの製造方法では、セパレータ成形工程と、接合セパレータ形成工程と、予備荷重付与工程と、を行う。予備荷重付与工程では、ビードシール部１０の直線部２に付与する予備荷重を、曲線部３に付与する予備荷重よりも小さく設定する。これにより、ビードシール部１０の直線部２と曲線部３の高さのばらつきを低減することができ、ひいては、ビードシール部１０の延長方向の面圧のばらつきを低減することができる。以下、実施例について詳細に説明する。 In the method for manufacturing a joint separator for a fuel cell, a separator molding step, a joint separator forming step, and a preload applying step are performed. In the preliminary load applying step, the preliminary load applied to the straight portion 2 of the bead seal portion 10 is set to be smaller than the preliminary load applied to the curved portion 3. As a result, it is possible to reduce the variation in height between the straight portion 2 and the curved portion 3 of the bead seal portion 10, and it is possible to reduce the variation in the surface pressure in the extension direction of the bead seal portion 10. Hereinafter, examples will be described in detail.

［実施例］
図１及び図２に示すように、接合セパレータ１は、燃料電池セル（図示省略）に用いられるセパレータである。燃料電池セルは、アノード側より供給される水素（燃料ガス）、カソード側より供給される酸素（酸化剤ガス）との化学反応により発電する部材である。燃料電池スタックは、燃料電池セルを複数個積層させ、隣り合う燃料電池セル所定の荷重で圧縮することで形成される。 [Example]
As shown in FIGS. 1 and 2, the junction separator 1 is a separator used for a fuel cell (not shown). A fuel cell is a member that generates electricity by a chemical reaction with hydrogen (fuel gas) supplied from the anode side and oxygen (oxidizer gas) supplied from the cathode side. The fuel cell stack is formed by stacking a plurality of fuel cell cells and compressing adjacent fuel cell cells with a predetermined load.

燃料電池セルに設けられた電解質膜・電極構造体（ＭＥＡ：Membrane Electrode Assembly）の電解質膜を一対の接合セパレータ１，１のビードシール部１０，１０で挟持することにより燃料ガス、酸化剤ガス等の反応ガスの漏洩を防ぐシール領域が形成される。一対の接合セパレータ１，１で挟持する部位は、樹脂フィルム（樹脂枠部材）である場合もある。 By sandwiching the electrolyte membrane of the electrolyte membrane / electrode structure (MEA: Membrane Electrode Assembly) provided in the fuel cell between the bead seal portions 10 and 10 of the pair of bonding separators 1 and 1, fuel gas, oxidant gas, etc. A sealing area is formed to prevent leakage of the reaction gas. The portion sandwiched between the pair of bonding separators 1 and 1 may be a resin film (resin frame member).

図１に示すように、本実施例に係る接合セパレータ１のビードシール部１０は、周方向に閉ループとなるように形成されている。ビードシール部１０の平面形状は、特に制限されないが、本実施例では長丸状になっている。ビードシール部１０は、対向する２つの直線部２と、対向する２つの曲線部３と、直線部２と曲線部３の間に形成される４つのつなぎ目部４とを有する。 As shown in FIG. 1, the bead seal portion 10 of the bonding separator 1 according to the present embodiment is formed so as to form a closed loop in the circumferential direction. The planar shape of the bead seal portion 10 is not particularly limited, but in this embodiment, it has an oblong shape. The bead seal portion 10 has two opposing straight straight portions 2, two opposing curved portions 3, and four joint portions 4 formed between the straight portions 2 and the curved portions 3.

次に、本実施例の燃料電池セルの製造方法について説明する。燃料電池セルの製造方法では、セパレータ成形工程と、接合セパレータ形成工程と、圧盤準備工程と、予備荷重付与工程と、組付け工程と、圧縮工程とを行う。燃料電池用接合セパレータの製造方法は、燃料電池セルの製造方法に含まれる。 Next, a method of manufacturing the fuel cell of this embodiment will be described. In the method for manufacturing a fuel cell, a separator forming step, a joining separator forming step, a platen preparation step, a preload applying step, an assembling step, and a compression step are performed. The method for manufacturing a junction separator for a fuel cell is included in the method for manufacturing a fuel cell.

セパレータ成形工程は、図２に示すように、第１金属セパレータ２１及び第２金属セパレータ２２を成形する工程である。第１金属セパレータ２１と第２金属セパレータ２２は同じ形状、大きさになっている。セパレータ成形工程では、平板状の厚さ０．０３〜０．３ｍｍ程度の金属薄板（素材）をプレス成形して第１金属セパレータ２１及び第２金属セパレータ２２を成形する。第１金属セパレータ２１は、平坦な基部３０と、単一のビード部３１とを備えている。なお、本実施例では、ビード部３１を一つ設けた場合を例示しているが、ビード部３１は複数あってもよいし、ビード部３１の他に高さの異なるビード部を設けてもよい。 As shown in FIG. 2, the separator molding step is a step of molding the first metal separator 21 and the second metal separator 22. The first metal separator 21 and the second metal separator 22 have the same shape and size. In the separator forming step, a flat metal thin plate (material) having a thickness of about 0.03 to 0.3 mm is press-formed to form the first metal separator 21 and the second metal separator 22. The first metal separator 21 includes a flat base 30 and a single bead portion 31. In this embodiment, the case where one bead portion 31 is provided is illustrated, but there may be a plurality of bead portions 31, or bead portions having different heights may be provided in addition to the bead portion 31. Good.

接合セパレータ形成工程は、接合セパレータを形成する工程である。図２に示すように、接合セパレータ形成工程では、第１金属セパレータ２１と第２金属セパレータ２２とを、ビード部３１が突出する側の面とは反対側の面同士を接合して接合セパレータを形成する。第１金属セパレータ２１と第２金属セパレータ２２とはロウ付け、かしめ、溶接等で一体化する。 The joining separator forming step is a step of forming a joining separator. As shown in FIG. 2, in the joining separator forming step, the first metal separator 21 and the second metal separator 22 are joined to each other on the side opposite to the side on which the bead portion 31 protrudes to form a joining separator. Form. The first metal separator 21 and the second metal separator 22 are integrated by brazing, caulking, welding, or the like.

ビード部３１，３１で構成されたビードシール部１０は、中空部を備えている。ビードシール部１０の延長方向に連続させつつ、ビードシール部１０の先端にシール部材１１，１１をそれぞれ取り付ける。シール部材１１は、弾性を有する材料で形成すればよく、例えば、エチレンプロピレンジエンゴム（ＥＰＤＭ）、シリコーンゴム（ＶＭＱ）、フッ素ゴム（ＦＫＭ）、ポリイソブチレン（ＰＩＢ）、樹脂等を用いることができる。 The bead seal portion 10 composed of the bead portions 31 and 31 includes a hollow portion. The seal members 11 and 11 are attached to the tips of the bead seal portions 10 while continuing in the extension direction of the bead seal portion 10. The sealing member 11 may be formed of an elastic material, and for example, ethylene propylene diene rubber (EPDM), silicone rubber (VMQ), fluororubber (FKM), polyisobutylene (PIB), resin, or the like can be used. ..

圧盤準備工程は、図３に示すように、圧盤６１，６１を用意する工程である。圧盤６１は、接合セパレータ１に予備荷重を付与する部材である。圧盤６１は、接合セパレータ１を挟んで一対配置され、同じ形状・大きさで形成されている。圧盤６１は、高強度の金属又は樹脂で形成されており、板状を呈する。圧盤６１は、対向面に、基準部６２と、段差部６３と、傾斜部６４とを有する。 As shown in FIG. 3, the platen preparation step is a step of preparing the pressure plates 61 and 61. The pressure plate 61 is a member that applies a preliminary load to the joint separator 1. The pressure plates 61 are arranged in pairs with the joining separator 1 interposed therebetween, and are formed in the same shape and size. The platen 61 is made of high-strength metal or resin and has a plate shape. The pressure plate 61 has a reference portion 62, a step portion 63, and an inclined portion 64 on the facing surface.

基準部６２は、圧盤６１の基準となる面であって、何も挟まずに圧盤６１，６１同士を突き合わせる（接触させる）と互いに接触する平坦な面である。段差部６３は、基準部６２よりも接合セパレータ１から離間した位置に形成される平坦な面である。何も挟まずに圧盤６１，６１同士を突き合わせる（接触させる）と段差部６３，６３同士は離間する。 The reference portion 62 is a reference surface of the pressure plate 61, and is a flat surface that comes into contact with each other when the pressure plates 61 and 61 are abutted (contacted) with each other without sandwiching anything. The step portion 63 is a flat surface formed at a position separated from the bonding separator 1 with respect to the reference portion 62. When the pressure plates 61 and 61 are brought into contact with each other without sandwiching anything, the stepped portions 63 and 63 are separated from each other.

傾斜部６４は、基準部６２と段差部６３との間に形成される傾斜面である。傾斜部６４は、基準部６２から離間するにつれて接合セパレータ１から離間するように傾斜している。何も挟まずに圧盤６１，６１同士を突き合わせる（接触させる）と傾斜部６４，６４同士は離間する。 The inclined portion 64 is an inclined surface formed between the reference portion 62 and the stepped portion 63. The inclined portion 64 is inclined so as to be separated from the joining separator 1 as it is separated from the reference portion 62. When the pressure plates 61 and 61 are brought into contact with each other without sandwiching anything, the inclined portions 64 and 64 are separated from each other.

図３に示すように、圧盤６１，６１で接合セパレータ１を挟持した状態（無負荷状態）において、対向する基準部６２，６２間の高さ寸法をＨ１とし、対向する段差部６３，６３間の高さ寸法をＨ２とし、対向する傾斜部６４，６４間の高さ寸法をＨ３とすると、Ｈ２＞Ｈ３＞Ｈ１となっている。 As shown in FIG. 3, in a state where the bonding separator 1 is sandwiched between the pressure plates 61 and 61 (no load state), the height dimension between the facing reference portions 62 and 62 is set to H1, and the height dimension between the facing step portions 63 and 63 is defined as H1. If the height dimension of the above is H2 and the height dimension between the opposing inclined portions 64, 64 is H3, then H2> H3> H1.

予備荷重付与工程は、図３、図４及び図５に示すように、接合セパレータ１に予備荷重を付与する工程である。予備荷重工程では、接合セパレータ１の厚さ方向の両側から圧盤６１，６１を平行状態を保持しつつ互いに近接させて荷重を付与する。このとき、ビードシール部１０の直線部２を段差部６３に対向させるとともに、曲線部３を基準部６２に対向させ、さらに、つなぎ目部４を傾斜部６４に対向させる。この状態で圧盤６１，６１を互いに近接させることによりビードシール部１０に荷重を付与し、各部位をそれぞれ塑性変形させる。 The preload applying step is a step of applying a preload to the joining separator 1 as shown in FIGS. 3, 4 and 5. In the preloading step, the pressure plates 61 and 61 are brought close to each other while maintaining a parallel state from both sides of the joining separator 1 in the thickness direction to apply a load. At this time, the straight portion 2 of the bead seal portion 10 is opposed to the step portion 63, the curved portion 3 is opposed to the reference portion 62, and the joint portion 4 is opposed to the inclined portion 64. In this state, the pressure plates 61 and 61 are brought close to each other to apply a load to the bead seal portion 10, and each portion is plastically deformed.

より詳しくは、図４Ａに示すように、荷重を付与する直前では、ビードシール部１０の直線部２と圧盤６１の段差部６３とは隙間Ｓａで離間している。その後、予備荷重付与工程で荷重を付与すると、図５Ａに示すように、ビードシール部１０の直線部２が圧盤６１，６１の段差部６３，６３によって所定の荷重で圧縮されて塑性変形する。 More specifically, as shown in FIG. 4A, immediately before the load is applied, the straight portion 2 of the bead seal portion 10 and the stepped portion 63 of the pressure plate 61 are separated by a gap Sa. After that, when a load is applied in the preliminary load applying step, as shown in FIG. 5A, the straight portion 2 of the bead seal portion 10 is compressed by the stepped portions 63 and 63 of the pressure plates 61 and 61 with a predetermined load and plastically deformed.

図４Ｂに示すように、荷重を付与する直前では、ビードシール部１０のつなぎ目部４と圧盤６１の傾斜部６４とは隙間Ｓｂで離間している。隙間Ｓｂは、隙間Ｓａよりも小さくなっている。その後、予備荷重付与工程で荷重を付与すると、図５Ｂに示すように、ビードシール部１０のつなぎ目部４が圧盤６１，６１の傾斜部６４，６４によって所定の荷重で圧縮されて塑性変形する。 As shown in FIG. 4B, immediately before the load is applied, the joint portion 4 of the bead seal portion 10 and the inclined portion 64 of the pressure plate 61 are separated by a gap Sb. The gap Sb is smaller than the gap Sa. After that, when a load is applied in the preliminary load applying step, as shown in FIG. 5B, the joint portion 4 of the bead seal portion 10 is compressed by the inclined portions 64 and 64 of the pressure plates 61 and 61 with a predetermined load and plastically deformed.

図４Ｃに示すように、荷重を付与する直前では、ビードシール部１０の曲線部３と圧盤６１の基準部６２と当接するか、わずかな隙間をあけて対向している。その後、予備荷重付与工程で荷重を付与すると、図５Ｃに示すように、ビードシール部１０の曲線部３が圧盤６１，６１の基準部６２，６２によって所定の荷重で圧縮されて塑性変形する。 As shown in FIG. 4C, immediately before applying the load, the curved portion 3 of the bead seal portion 10 and the reference portion 62 of the pressure plate 61 are in contact with each other or are opposed to each other with a slight gap. After that, when a load is applied in the preliminary load applying step, as shown in FIG. 5C, the curved portion 3 of the bead seal portion 10 is compressed by the reference portions 62 and 62 of the pressure plates 61 and 61 with a predetermined load and plastically deformed.

図５Ａ、図５Ｂ及び図５Ｃに示すように、圧盤６１，６１の対向面には、高さの異なる基準部６２、段差部６３及び傾斜部６４がそれぞれ形成されているため、ビードシール部１０に付与される荷重も異なっている。つまり、ビードシール部１０に付与される荷重は、曲線部３、つなぎ目部４、直線部２の順番で小さくなっている。換言すると、予備荷重付与工程では、ビードシール部１０の直線部２に付与する予備荷重が、曲線部３に付与する予備荷重よりも小さく設定される。予備荷重付与工程を終え、圧盤６１，６１を離間させて接合セパレータ１から荷重を解放した時、ビードシール部１０の高さ寸法ｈ（図２参照）は、ビードシール部１０の延長方向においてこの時点では一定になっていない。 As shown in FIGS. 5A, 5B and 5C, since the reference portion 62, the step portion 63 and the inclined portion 64 having different heights are formed on the facing surfaces of the pressure plates 61 and 61, respectively, the bead seal portion 10 The load applied to is also different. That is, the load applied to the bead seal portion 10 decreases in the order of the curved portion 3, the joint portion 4, and the straight portion 2. In other words, in the preliminary load applying step, the preliminary load applied to the straight portion 2 of the bead seal portion 10 is set to be smaller than the preliminary load applied to the curved portion 3. When the preload application process is completed and the pressure plates 61 and 61 are separated from each other to release the load from the joining separator 1, the height dimension h of the bead seal portion 10 (see FIG. 2) is the extension direction of the bead seal portion 10. It is not constant at that time.

組付け工程は、一対の接合セパレータ１で、電解質膜・電極構造体（図示省略）を挟持して電池セルを形成する工程である。 The assembling step is a step of forming a battery cell by sandwiching an electrolyte membrane / electrode structure (not shown) between a pair of bonding separators 1.

圧縮工程では、複数の電池セルを積層させて、電池セルの厚さ方向に所定の圧縮荷重を付与して燃料電池スタックを形成する工程である。燃料電池スタックが形成され、対向する接合セパレータ１，１同士の隙間が所定の締結隙間になった時、ビードシール部１０の高さ寸法ｈ（図２参照）は周方向に亘って同一又は概ね同一の高さになっている。 The compression step is a step of stacking a plurality of battery cells and applying a predetermined compression load in the thickness direction of the battery cells to form a fuel cell stack. When the fuel cell stack is formed and the gap between the opposing bonding separators 1 and 1 becomes a predetermined fastening gap, the height dimension h (see FIG. 2) of the bead seal portion 10 is the same or approximately the same in the circumferential direction. It is the same height.

次に、本実施例の作用効果について説明する。図６は、比較例に係るビードシール部の高さと荷重との関係を示すグラフである。図６の締結隙間Ｇは、燃料電池スタックが形成された時のビードシール部の高さである。当該比較例では、予備荷重付与工程において、平坦な対向面を備えた一対の圧盤（対向面の高さ位置は一定）を準備して、予備荷重を付与する。 Next, the action and effect of this example will be described. FIG. 6 is a graph showing the relationship between the height of the bead seal portion and the load according to the comparative example. The fastening gap G in FIG. 6 is the height of the bead seal portion when the fuel cell stack is formed. In the comparative example, in the preliminary load applying step, a pair of pressure plates having flat facing surfaces (the height position of the facing surfaces is constant) are prepared and the preliminary load is applied.

比較例の場合、前記したように、ビードシール部に周方向に亘って一定の予備荷重を付与しても、直線部及び曲線部の予備荷重付与後のスプリングバック量が異なるため、直線部と曲線部のビードシール部の高さ寸法が異なる。図６の符号αで示した線は、比較例の予備荷重付与工程における圧盤間の距離を示している。図６の締結隙間Ｇでは、直線部と曲線部とで面圧のギャップが生じている。つまり、比較例では、ビードシール部の延長方向において面圧のばらつきが発生している。 In the case of the comparative example, as described above, even if a constant preliminary load is applied to the bead seal portion in the circumferential direction, the amount of springback after the preliminary load is applied to the straight portion and the curved portion is different. The height dimension of the bead seal part of the curved part is different. The line indicated by the reference numeral α in FIG. 6 indicates the distance between the pressure plates in the preliminary load applying step of the comparative example. In the fastening gap G of FIG. 6, there is a surface pressure gap between the straight portion and the curved portion. That is, in the comparative example, the surface pressure varies in the extension direction of the bead seal portion.

これに対し、本実施例では、段差部６３を備えた圧盤６１，６１で予備荷重を付与するため、直線部２に作用する予備荷重を曲線部３より小さくすることができ、燃料電池スタックを形成した時に、ビードシール部１０の直線部２における高さ寸法ｈの低下を防ぐことができる。図７の符号βで示した線は、実施例の予備荷重付与工程における段差部６３，６３間の距離を示している（β＞α）。つまり、圧盤６１に段差部６３を設けることにより、押し込む力を部位ごとに変えることができるため、ビードシール部１０の高さ寸法を局所的に制御することができる。これにより、ビードシール部１０の面圧のばらつきを低減することができるため、図７に示すように締結隙間Ｇにおいて直線部２と曲線部３とでビードシール部１０に作用する荷重を一致させることができる。 On the other hand, in the present embodiment, since the preliminary load is applied by the pressure plates 61 and 61 provided with the stepped portion 63, the preliminary load acting on the straight portion 2 can be made smaller than that of the curved portion 3, and the fuel cell stack can be formed. When formed, it is possible to prevent a decrease in the height dimension h in the straight portion 2 of the bead seal portion 10. The line indicated by the reference numeral β in FIG. 7 indicates the distance between the step portions 63 and 63 in the preliminary load applying step of the embodiment (β> α). That is, by providing the stepped portion 63 on the pressure plate 61, the pushing force can be changed for each portion, so that the height dimension of the bead seal portion 10 can be locally controlled. As a result, the variation in the surface pressure of the bead seal portion 10 can be reduced. Therefore, as shown in FIG. 7, the load acting on the bead seal portion 10 is made to match between the straight portion 2 and the curved portion 3 in the fastening gap G. be able to.

また、本実施例では、圧盤６１につなぎ目部４に対応する傾斜部６４を備えているため、つなぎ目部４においてビードシール部１０の座屈が生じ難くなり、シール性の悪化を防ぐことができる。 Further, in the present embodiment, since the pressure plate 61 is provided with the inclined portion 64 corresponding to the joint portion 4, buckling of the bead seal portion 10 is less likely to occur at the joint portion 4, and deterioration of the sealing property can be prevented. ..

また、本実施例の接合セパレータ１によれば、ビードシール部１０の全体に予備荷重が付与されて予め塑性変形されているため、運転範囲が拡大し、外乱（温度変化や衝突等）に耐え得る広い荷重特性が得られ、所望のシール面圧を得ることができる。 Further, according to the bonding separator 1 of the present embodiment, since a preliminary load is applied to the entire bead seal portion 10 and the bead seal portion 10 is plastically deformed in advance, the operating range is expanded and it can withstand disturbances (temperature changes, collisions, etc.). A wide range of load characteristics can be obtained, and a desired sealing surface pressure can be obtained.

直線部２、曲線部３及びつなぎ目部４の各高さ寸法Ｈ１，Ｈ２，Ｈ３の設定方法については、例えば、様々な段差部を備えた圧盤を作成し、当該圧盤を用いて接合セパレータに予備荷重を付与して、その都度、ビードシール部の高さと荷重との関係性を示した荷重特性のグラフを取得する。そして、本実施例のように、締結隙間Ｇにおいて、ビードシール部に付与される荷重が直線部２及び曲線部３とで一致もしくは概ね一致するように段差部を決定する。さらには、締結隙間Ｇにおいて、ビードシール部に付与される荷重が直線部２、曲線部３及びつなぎ目部４で一致もしくは概ね一致するように段差部及び傾斜部を決定する。 Regarding the method of setting the height dimensions H1, H2, and H3 of the straight portion 2, the curved portion 3, and the joint portion 4, for example, a pressure plate having various stepped portions is created, and the pressure plate is used as a spare for the joint separator. A load is applied, and each time a load is applied, a graph of load characteristics showing the relationship between the height of the bead seal portion and the load is acquired. Then, as in the present embodiment, in the fastening gap G, the step portion is determined so that the load applied to the bead seal portion coincides with or substantially coincides with the straight portion 2 and the curved portion 3. Further, in the fastening gap G, the stepped portion and the inclined portion are determined so that the load applied to the bead seal portion coincides with or substantially coincides with the straight portion 2, the curved portion 3, and the joint portion 4.

［実施例２］
次に、実施例２に係る燃料電池用接合セパレータの製造方法及び燃料電池用接合セパレータについて説明する。図８は、変形例に係る接合セパレータの平面図である。図８に示すように、変形例に係る接合セパレータ１Ａには、ビードシール部１０の他に、反応ガス用マニホールド又は冷媒用マニホールドをシールするビードシール部１０Ａが形成されている。接合セパレータ１Ａのように、ビードシール部１０，１０Ａは複数本設けてもよい。また、ビードシール部１０，１０Ａは同じ形状の断面でもよいし、異なる断面でもよい。 [Example 2]
Next, a method for manufacturing the fuel cell bonding separator and the fuel cell bonding separator according to the second embodiment will be described. FIG. 8 is a plan view of the joining separator according to the modified example. As shown in FIG. 8, in the bonding separator 1A according to the modified example, in addition to the bead seal portion 10, a bead seal portion 10A for sealing the reaction gas manifold or the refrigerant manifold is formed. A plurality of bead seal portions 10 and 10A may be provided as in the bonding separator 1A. Further, the bead seal portions 10 and 10A may have the same cross section or different cross sections.

変形例に係る燃料電池用接合セパレータの製造方法では、実施例と同じ要領で各工程を行う。このとき、圧盤の段差部及び傾斜部の高さ寸法は、ビードシール部１０、各ビードシール部１０Ａに応じて適宜設定することができる。 In the method for manufacturing the fuel cell bonding separator according to the modified example, each step is performed in the same manner as in the embodiment. At this time, the height dimensions of the stepped portion and the inclined portion of the platen can be appropriately set according to the bead seal portion 10 and each bead seal portion 10A.

以上実施例及び変形例について説明したが、適宜設計変更が可能である。例えば、シール部材１１は省略してもよい。 Although the examples and modifications have been described above, the design can be changed as appropriate. For example, the seal member 11 may be omitted.

１ 燃料電池用接合セパレータ（接合セパレータ）
２ 直線部
３ 曲線部
４ つなぎ目部
１０ ビードシール部
２１ 第１金属セパレータ
２２ 第２金属セパレータ
３１ ビード部
６１ 圧盤
６２ 基準部
６３ 段差部
６４ 傾斜部 1 Join separator for fuel cells (join separator)
2 Straight part 3 Curved part 4 Joint part 10 Bead seal part 21 1st metal separator 22 2nd metal separator 31 Bead part 61 Pressure plate 62 Reference part 63 Step part 64 Inclined part

Claims (3)

凸状を呈するビード部を有する第１金属セパレータ及び第２金属セパレータを、前記ビード部が突出する側の面とは反対側の面同士を接合して接合セパレータを形成する接合セパレータ形成工程と、
一対の前記ビード部で形成されたビードシール部に、一対の圧盤で前記接合セパレータの厚さ方向に予備荷重を付与して、前記ビードシール部を塑性変形させる予備荷重付与工程と、を含み、
前記予備荷重付与工程では、前記ビードシール部の直線部に付与する予備荷重を、曲線部に付与する予備荷重よりも小さく設定することを特徴とする燃料電池用接合セパレータの製造方法。 A joining separator forming step of joining the first metal separator and the second metal separator having a bead portion having a convex shape to each other on the side opposite to the surface on the side where the bead portion protrudes to form a joining separator.
A preload applying step of applying a preload to the bead seal portions formed by the pair of bead portions in the thickness direction of the bonding separator by a pair of pressure plates to plastically deform the bead seal portions.
The method for manufacturing a fuel cell bonding separator, which comprises setting the preliminary load applied to the straight portion of the bead seal portion to be smaller than the preliminary load applied to the curved portion in the preliminary load applying step. 一対の前記圧盤の対向面に、基準部と、基準部よりも前記接合セパレータから離間する位置にある段差部とを設け、
前記予備荷重付与工程では、前記接合セパレータの前記曲線部が前記基準部に対向し、前記直線部が前記段差部に対向するように配置しつつ前記予備荷重を付与することを特徴とする請求項１に記載の燃料電池用接合セパレータの製造方法。 A reference portion and a step portion at a position separated from the reference portion from the joint separator are provided on the facing surfaces of the pair of pressure plates.
The claim is characterized in that, in the preload applying step, the preload is applied while the curved portion of the joining separator faces the reference portion and the straight portion faces the step portion. The method for manufacturing a bonding separator for a fuel cell according to 1. 一対の前記圧盤の対向面のうち、前記基準部と前記段差部との間に傾斜部を設け、
前記予備荷重付与工程では、前記ビードシール部の前記曲線部と前記直線部の間のつなぎ目部が前記傾斜部と対向するように配置しつつ前記予備荷重を付与することを特徴とする請求項２に記載の燃料電池用接合セパレータの製造方法。 Of the pair of facing surfaces of the platen, an inclined portion is provided between the reference portion and the step portion.
2. The preload applying step is characterized in that the preload is applied while the joint portion between the curved portion and the straight portion of the bead seal portion is arranged so as to face the inclined portion. A method for manufacturing a bonding separator for a fuel cell according to.
JP2019231126A 2019-12-23 2019-12-23 Manufacturing method of bonded separator for fuel cells Active JP7428514B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2019231126A JP7428514B2 (en) 2019-12-23 2019-12-23 Manufacturing method of bonded separator for fuel cells
CN202011485344.8A CN113097527B (en) 2019-12-23 2020-12-16 Method for manufacturing joint separator for fuel cell
US17/128,713 US11302931B2 (en) 2019-12-23 2020-12-21 Method of manufacturing separator assembly used for fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019231126A JP7428514B2 (en) 2019-12-23 2019-12-23 Manufacturing method of bonded separator for fuel cells

Publications (2)

Publication Number Publication Date
JP2021099930A true JP2021099930A (en) 2021-07-01
JP7428514B2 JP7428514B2 (en) 2024-02-06

Family

ID=76438798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019231126A Active JP7428514B2 (en) 2019-12-23 2019-12-23 Manufacturing method of bonded separator for fuel cells

Country Status (3)

Country Link
US (1) US11302931B2 (en)
JP (1) JP7428514B2 (en)
CN (1) CN113097527B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022085509A (en) * 2020-11-27 2022-06-08 Nok株式会社 Separator manufacturing method
DE112022003089T5 (en) 2021-06-16 2024-04-04 Sumco Corporation Polishing head, polishing device and method for producing a semiconductor wafer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7428514B2 (en) * 2019-12-23 2024-02-06 Nok株式会社 Manufacturing method of bonded separator for fuel cells

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006228533A (en) * 2005-02-16 2006-08-31 Nissan Motor Co Ltd Molding method of separator for fuel cell and separator shape correcting device
JP2016015207A (en) * 2014-07-01 2016-01-28 トヨタ自動車株式会社 Method of manufacturing fuel battery stack
JP2016081909A (en) * 2014-10-21 2016-05-16 株式会社日本自動車部品総合研究所 Fuel battery separator
JP2017139218A (en) * 2016-02-02 2017-08-10 本田技研工業株式会社 Method of producing fuel cell stack and method of producing metal separator for fuel cell
WO2020121623A1 (en) * 2018-12-11 2020-06-18 Nok株式会社 Metal bead seal, manufacturing method for same, and manufacturing method for fuel cells
JP7264802B2 (en) * 2019-12-23 2023-04-25 Nok株式会社 Separator manufacturing method

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4435466B2 (en) * 2002-08-12 2010-03-17 本田技研工業株式会社 Assembly method of fuel cell stack
WO2004036677A2 (en) * 2002-10-14 2004-04-29 Reinz-Dichtungs-Gmbh Electrochemical system
JP4733915B2 (en) * 2003-07-02 2011-07-27 本田技研工業株式会社 Fuel cell
JP2007026899A (en) * 2005-07-15 2007-02-01 Nissan Motor Co Ltd Fuel cell and manufacturing method of separator therefor
JP5292803B2 (en) * 2007-12-21 2013-09-18 日産自動車株式会社 Separator, fuel cell stack, and fuel cell stack manufacturing method
JP2010123360A (en) * 2008-11-19 2010-06-03 Nippon Pillar Packing Co Ltd Fuel cell separator and method of manufacturing the same
JP5132699B2 (en) * 2010-02-22 2013-01-30 本田技研工業株式会社 Membrane electrode structure for fuel cell and manufacturing method thereof
EP2669079B1 (en) * 2011-01-27 2016-04-06 Sintokogio, Ltd. Laminate immobilizing jig, laminate assembly manufacturing system, and manufacturing method for laminate assembly
JP5911013B2 (en) * 2012-05-10 2016-04-27 内山工業株式会社 Method for manufacturing fuel cell assembly
JP6051852B2 (en) * 2012-12-27 2016-12-27 日産自動車株式会社 Fuel cell stack and seal plate used therefor
WO2014171260A1 (en) * 2013-04-15 2014-10-23 日産自動車株式会社 Fuel-cell-stack manufacturing method and manufacturing device
JP6499247B2 (en) * 2017-09-07 2019-04-10 本田技研工業株式会社 Fuel cell separator and fuel cell stack
US11031610B2 (en) * 2018-03-23 2021-06-08 Honda Motor Co., Ltd. Fuel cell stack
JP7428514B2 (en) * 2019-12-23 2024-02-06 Nok株式会社 Manufacturing method of bonded separator for fuel cells
JP7436350B2 (en) * 2020-11-27 2024-02-21 Nok株式会社 Separator manufacturing method
JP7290682B2 (en) * 2021-03-17 2023-06-13 本田技研工業株式会社 Fuel cell manufacturing method
JP2023071352A (en) * 2021-11-11 2023-05-23 トヨタ自動車株式会社 Manufacturing method of separator for fuel battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006228533A (en) * 2005-02-16 2006-08-31 Nissan Motor Co Ltd Molding method of separator for fuel cell and separator shape correcting device
JP2016015207A (en) * 2014-07-01 2016-01-28 トヨタ自動車株式会社 Method of manufacturing fuel battery stack
JP2016081909A (en) * 2014-10-21 2016-05-16 株式会社日本自動車部品総合研究所 Fuel battery separator
JP2017139218A (en) * 2016-02-02 2017-08-10 本田技研工業株式会社 Method of producing fuel cell stack and method of producing metal separator for fuel cell
WO2020121623A1 (en) * 2018-12-11 2020-06-18 Nok株式会社 Metal bead seal, manufacturing method for same, and manufacturing method for fuel cells
JP7264802B2 (en) * 2019-12-23 2023-04-25 Nok株式会社 Separator manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022085509A (en) * 2020-11-27 2022-06-08 Nok株式会社 Separator manufacturing method
JP7436350B2 (en) 2020-11-27 2024-02-21 Nok株式会社 Separator manufacturing method
DE112022003089T5 (en) 2021-06-16 2024-04-04 Sumco Corporation Polishing head, polishing device and method for producing a semiconductor wafer

Also Published As

Publication number Publication date
CN113097527B (en) 2024-05-14
CN113097527A (en) 2021-07-09
JP7428514B2 (en) 2024-02-06
US20210194016A1 (en) 2021-06-24
US11302931B2 (en) 2022-04-12

Similar Documents

Publication Publication Date Title
CN113097527B (en) Method for manufacturing joint separator for fuel cell
JP7264802B2 (en) Separator manufacturing method
US10910658B2 (en) Fuel cell metal separator, method of producing the fuel cell metal separator, and power generation cell
JP2006228533A (en) Molding method of separator for fuel cell and separator shape correcting device
JP6414638B2 (en) Fuel cell electrode structure, metal separator, fuel cell using the fuel cell electrode structure and metal separator, and mold for producing the fuel cell electrode structure
JP2003220664A (en) Resin/metal joint body for sealing
JP2015191802A (en) fuel cell stack
CN113097526B (en) Joint separator for fuel cell
JP2005108565A (en) Sealing structure for fuel cell
CN111740128A (en) Separator assembly for fuel cell and method of manufacturing the same
JP6927025B2 (en) Fuel cell separator manufacturing equipment and fuel cell separator manufacturing method
JP6628166B2 (en) Fuel cell stack
WO2020195002A1 (en) Fuel cell gasket
JP7017944B2 (en) Manufacturing method of metal molded body
JP7181409B2 (en) FUEL BATTERY CELL AND METHOD FOR MANUFACTURING FUEL BATTERY CELL
JP2006127948A (en) Fuel cell stack
JP7390936B2 (en) Gasket manufacturing method
US11437633B2 (en) Fuel cell seal structure
US20230318004A1 (en) Method for manufacturing fuel cell stack and method for manufacturing joint separator
US20230317978A1 (en) Gasket For Fuel Cell
TW201440292A (en) Fuel cell stack assembly and method of assembly
JP2006114443A (en) Manufacturing method and manufacturing device of separator
CN113451597A (en) Separator and method for manufacturing separator

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20221101

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230612

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20230704

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20230831

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20231004

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240109

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240125

R150 Certificate of patent or registration of utility model

Ref document number: 7428514

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150